Interleaving method and apparatus, de-interleaving method and apparatus, and interleaving/de-interleaving system and apparatus

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(11)

EP 0 998 046 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	01.10.2003 Bulletin 2003/40

(43)	Date of publication A2:
	03.05.2000 Bulletin 2000/18

(21)	Application number: 99108558.0

(22)	Date of filing: 05.05.1999

(51)	International Patent Classification (IPC)⁷: H03M 13/27

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

30.10.1998 JP 31151298

(71)	Applicant: FUJITSU LIMITED
	Kawasaki-shi, Kanagawa 211-8588 (JP)

(72)	Inventors:
	Ohbuchi, Kazuhisa Nakahara-ku, Kawasaki-shi, Kanagawa 211 (JP) Nakamura, Takaharu Nakahara-ku, Kawasaki-shi, Kanagawa 211 (JP) Kawabata, Kazuo Nakahara-ku, Kawasaki-shi, Kanagawa 211 (JP)

(74)	Representative: HOFFMANN - EITLE
	Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)

(54)	Interleaving method and apparatus, de-interleaving method and apparatus, and interleaving/de-interleaving system and apparatus

(57) An interleaving apparatus comprises a first storing unit (2) for storing data to be transmitted and a first control unit (3) for controlling the first storing unit (2) so that the data to be transmitted is outputted from the first storing unit (2) with the data to be transmitted arranged in a matrix and at least either columns or rows of the data to be transmitted randomly rearranged, facilitating the interleaving. The result is that biased distribution of data, which leads to degradation of the transmission quality, can be prevented relatively easily in a simple structure.

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